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Class Information
Number: 187/393
Name: Elevator, industrial lift truck, or stationary lift for vehicle > With monitoring, signalling, and indicating means > Monitors operational parameter
Description: Subject matter wherein the physical condition checked or sensed is one which it is essential for anyone maintaining or using the elevator to know for the safe or proper functioning of the elevator (e.g., position, speed, direction).
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 5398782 |
Remote monitoring system with variable period communication check |
Mar. 21, 1995 |
| 5392879 |
Electronic failure detection system |
Feb. 28, 1995 |
| 5379864 |
Magnetic system for elevator car lateral suspension |
Jan. 10, 1995 |
| 5374794 |
Elevator control valve assembly |
Dec. 20, 1994 |
| 5373123 |
Electromagnetic gaging of elevator rails and other structures |
Dec. 13, 1994 |
| 5368132 |
Suspended elevator cab magnetic guidance to rails |
Nov. 29, 1994 |
| 5367132 |
Centering control for elevator horizontal suspension |
Nov. 22, 1994 |
| 5354233 |
Emergency ventilation system for elevator cab |
Oct. 11, 1994 |
| 5345048 |
Elevator speed check using constant ratiometric comparison |
Sep. 6, 1994 |
| 5345042 |
Elevator hitch load weighing tare compensation |
Sep. 6, 1994 |
| 5345046 |
Voice communication for elevator |
Sep. 6, 1994 |
| 5343003 |
Recalibration of hitch load weighing using dynamic tare |
Aug. 30, 1994 |
| 5322144 |
Active control of elevator platform |
Jun. 21, 1994 |
| 5321216 |
Restraining elevator car motion while the doors are open |
Jun. 14, 1994 |
| 5321217 |
Apparatus and method for controlling an elevator horizontal suspension |
Jun. 14, 1994 |
| 5308938 |
Elevator active suspension system |
May. 3, 1994 |
| 5307903 |
Method and system of controlling elevators and method and apparatus of inputting requests to the control system |
May. 3, 1994 |
| 5306879 |
Load measuring apparatus for an elevator car |
Apr. 26, 1994 |
| 5304751 |
Elevator horizontal suspensions and controls |
Apr. 19, 1994 |
| 5294757 |
Active vibration control system for an elevator, which reduces horizontal and rotational forces acting on the car |
Mar. 15, 1994 |
| 5283399 |
Group control of elevator system improvement measures |
Feb. 1, 1994 |
| 5281774 |
Drive control unit for hydraulic elevator |
Jan. 25, 1994 |
| 5276292 |
Operation check device of dynamic brake circuit for elevator |
Jan. 4, 1994 |
| 5274203 |
"Smart" position transducer system for elevators |
Dec. 28, 1993 |
| 5266756 |
Control apparatus for hydraulic elevators using fuzzy logic and speed control |
Nov. 30, 1993 |
| 5243154 |
Apparatus for controlling a hydraulic elevator |
Sep. 7, 1993 |
| 5233139 |
Measurement of traction, operation of brake, friction safety gear, and cable forces of an elevator |
Aug. 3, 1993 |
| 5207298 |
Elevator rotary door interlock |
May. 4, 1993 |
| 5170021 |
Hydraulic elevator control system using a plurality of solenoid valves |
Dec. 8, 1992 |
| 5156239 |
Disc brake/load weighing assembly for elevator drive sheave |
Oct. 20, 1992 |
| 5144101 |
Control apparatus for elevator doors using velocity limiting circuits |
Sep. 1, 1992 |
| 5139113 |
Apparatus for detecting abnormalities in elevator motion |
Aug. 18, 1992 |
| 5107964 |
Separate elevator door chain |
Apr. 28, 1992 |
| 5074385 |
Call registration apparatus in an elevator system |
Dec. 24, 1991 |
| 5052522 |
Encoder installing structure |
Oct. 1, 1991 |
| 5042621 |
Method and apparatus for the measurement and tuning of an elevator system |
Aug. 27, 1991 |
| 5007506 |
Elevator remote-control method |
Apr. 16, 1991 |
| 4979593 |
Elevator controller |
Dec. 25, 1990 |
| 4936419 |
Elevator diagnostic display system |
Jun. 26, 1990 |
| 4930604 |
Elevator diagnostic monitoring apparatus |
Jun. 5, 1990 |
| 4924974 |
Elevator system having hall lantern assembly for elevator car door post of hatch door post |
May. 15, 1990 |
| RE33171 |
Hydraulic elevator |
Feb. 27, 1990 |
| 4898263 |
Elevator self-diagnostic control system |
Feb. 6, 1990 |
| 4880082 |
Method for determining the position of an elevator car and a pulse count based floor selector |
Nov. 14, 1989 |
| 4846310 |
Signal transmission apparatus for elevator |
Jul. 11, 1989 |
| 4832157 |
Displaying device for elevator |
May. 23, 1989 |
| 4823914 |
Status line monitoring system and method of using same |
Apr. 25, 1989 |
| 4771865 |
System for the remote management of elevator installations |
Sep. 20, 1988 |
| 4750591 |
Elevator car door and motion sequence monitoring apparatus and method |
Jun. 14, 1988 |
| 4698780 |
Method of monitoring an elevator system |
Oct. 6, 1987 |
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